twilight arch

noun

: the shadow of the earth on the atmosphere seen rising in the eastern sky during evening twilight and setting in the western sky during morning twilight as an arched pinkish band with a dark bluish area beneath

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Cite this Entry

“Twilight arch.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/twilight%20arch. Accessed 5 Nov. 2024.

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